<template>
  <div class="my-counter">
    <button type="button" class="btn btn-light" @click="good.goods_count--" :disabled="good.goods_count <=1">-</button>
    <input @blur="countChange" type="number" class="form-control inp" v-model.number="good.goods_count">
    <button type="button" class="btn btn-light" @click="good.goods_count++" >+</button>
  </div>
</template>

<script>
export default {
  props: {
    good:Object,
  },
  methods: {
     // 因为数量控制要通过对象"互相引用的关系"来影响外面对象里的数量值, 所以最好传 对象进来
    countChange() {
     // 拿到商品数量, 判断小于1, 强制修改成1
      if (this.good.goods_count <= 1) {
        this.good.goods_count = 1
      }
    }
  }
}
</script>

<style lang="less" scoped>
.my-counter {
  display: flex;
  .inp {
    width: 45px;
    text-align: center;
    margin: 0 10px;
  }
  .btn, .inp{
    transform: scale(0.9);
  }
}
</style>